remove unnecessary semicolon

README.md

@@ -1,6 +1,8 @@
 build a minimal chroot/container/vm filesystem by taking a list of files and
 putting them and their necessary libs into a target rootfs directory
 
+this is linux only
+
 example:
 
 ```

rustfmt.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+find src -type f -name '*.rs' -exec rustfmt {} +

src/dirs.rs

@@ -2,7 +2,8 @@ use std::fs::read_dir;
 use std::path::PathBuf;
 
 use crate::config::Config;
-use crate::error::*;
+use crate::result::Result;
+use crate::serr;
 use crate::util::mkdir;
 
 static DIRS: &[&str] = &[
@@ -10,7 +11,7 @@ static DIRS: &[&str] = &[
 	"usr", "var", "usr/bin",
 ];
 
-pub fn check(config: &Config) -> MkrootResult<()> {
+pub fn check(config: &Config) -> Result<()> {
 	if !&config.root_dir.exists() {
 		return Ok(());
 	}
@@ -26,24 +27,25 @@ pub fn check(config: &Config) -> MkrootResult<()> {
 	Ok(())
 }
 
-fn open(dir: &PathBuf, verbose: bool) -> MkrootResult<()> {
+fn open(dir: &PathBuf, verbose: bool) -> Result<()> {
 	if dir.exists() {
 		if verbose {
 			println!("Checking directory {}", &dir.display());
 		}
 		if let Err(e) = read_dir(&dir) {
-			return Err(MkrootError::from(format!(
-				"Error opening directory {}: {}",
-				&dir.display(),
-				e
-			)));
+			return serr!(
+				"Error opening directory ",
+				&dir.display().to_string(),
+				": ",
+				&e.to_string()
+			);
 		}
 	}
 
 	Ok(())
 }
 
-pub fn create(config: &Config) -> MkrootResult<()> {
+pub fn create(config: &Config) -> Result<()> {
 	if config.verbose {
 		println!("Creating directory {}", &config.root_dir.display());
 	}

src/error.rs

@@ -1,49 +0,0 @@
-use std::fmt::{Display, Formatter, Result as FmtResult};
-use std::io::Error as IoError;
-
-use regex::Error as RegexError;
-
-pub type MkrootResult<T> = Result<T, MkrootError>;
-
-#[derive(Debug)]
-pub enum MkrootError {
-	Io(IoError),
-	Regex(RegexError),
-	Custom(String),
-	Empty,
-}
-
-impl From<IoError> for MkrootError {
-	fn from(e: IoError) -> MkrootError {
-		MkrootError::Io(e)
-	}
-}
-
-impl From<RegexError> for MkrootError {
-	fn from(e: RegexError) -> MkrootError {
-		MkrootError::Regex(e)
-	}
-}
-
-impl From<String> for MkrootError {
-	fn from(e: String) -> MkrootError {
-		MkrootError::Custom(e)
-	}
-}
-
-impl From<()> for MkrootError {
-	fn from(_: ()) -> MkrootError {
-		MkrootError::Empty
-	}
-}
-
-impl Display for MkrootError {
-	fn fmt(&self, f: &mut Formatter) -> FmtResult {
-		match *self {
-			MkrootError::Io(ref e) => Display::fmt(e, f),
-			MkrootError::Regex(ref e) => Display::fmt(e, f),
-			MkrootError::Custom(ref e) => Display::fmt(e, f),
-			MkrootError::Empty => Display::fmt("Empty", f),
-		}
-	}
-}

src/files.rs

@@ -6,7 +6,8 @@ use std::process::Command;
 use regex::Regex;
 
 use crate::config::Config;
-use crate::error::*;
+use crate::result::Result;
+use crate::serr;
 use crate::util::{copy_file, set_perms};
 
 pub struct Files {
@@ -17,7 +18,7 @@ pub struct Files {
 }
 
 impl Files {
-	pub fn gather(config: &Config) -> MkrootResult<Files> {
+	pub fn gather(config: &Config) -> Result<Files> {
 		let mut myfiles = Files {
 			bins: Vec::new(),
 			sbins: Vec::new(),
@@ -55,7 +56,7 @@ impl Files {
 		Ok(myfiles)
 	}
 
-	pub fn copy(&self, config: &Config) -> MkrootResult<()> {
+	pub fn copy(&self, config: &Config) -> Result<()> {
 		let mut target = PathBuf::from(&config.root_dir);
 		target.push("bin");
 		copy_files(&self.bins, &target, 0o755, config.verbose)?;
@@ -76,11 +77,7 @@ impl Files {
 	}
 }
 
-pub fn set_linker_permissions(
-	libs: &[PathBuf],
-	dir: &PathBuf,
-	verbose: bool,
-) -> MkrootResult<()> {
+pub fn set_linker_permissions(libs: &[PathBuf], dir: &PathBuf, verbose: bool) -> Result<()> {
 	for lib in libs {
 		if let Some(fn_osstr) = &lib.file_name() {
 			if let Some(fn_str) = fn_osstr.to_str() {
@@ -101,21 +98,19 @@ pub fn set_linker_permissions(
 	Ok(())
 }
 
-fn open(p: &PathBuf) -> MkrootResult<()> {
+fn open(p: &PathBuf) -> Result<()> {
 	if let Err(e) = File::open(&p) {
-		return Err(MkrootError::from(format!(
-			"Error opening file ({}): {}",
-			&p.display(),
-			e
-		)));
+		return serr!(
+			"Error opening file (",
+			&p.display().to_string(),
+			"): ",
+			&e.to_string()
+		);
 	}
 	Ok(())
 }
 
-fn libs_from_ldd(
-	file: &PathBuf,
-	config: &Config,
-) -> MkrootResult<(Vec<PathBuf>, Vec<PathBuf>)> {
+fn libs_from_ldd(file: &PathBuf, config: &Config) -> Result<(Vec<PathBuf>, Vec<PathBuf>)> {
 	let ldd = ldd(&file, &config)?;
 
 	let mut libs: Vec<PathBuf> = Vec::new();
@@ -150,12 +145,7 @@ fn libs_from_ldd(
 	Ok((libs, lib64s))
 }
 
-fn copy_files(
-	files: &[PathBuf],
-	target: &PathBuf,
-	mode: u32,
-	verbose: bool,
-) -> MkrootResult<()> {
+fn copy_files(files: &[PathBuf], target: &PathBuf, mode: u32, verbose: bool) -> Result<()> {
 	for f in files {
 		let mut t = PathBuf::from(&target);
 		if let Some(filename) = &f.file_name() {
@@ -175,7 +165,7 @@ fn copy_files(
 	Ok(())
 }
 
-fn ldd(file: &PathBuf, config: &Config) -> MkrootResult<String> {
+fn ldd(file: &PathBuf, config: &Config) -> Result<String> {
 	match Command::new(&config.ldd).arg(file).output() {
 		Ok(output) => {
 			if output.status.success() {
@@ -199,11 +189,12 @@ fn ldd(file: &PathBuf, config: &Config) -> MkrootResult<String> {
 				Ok(String::new())
 			}
 		}
-		Err(e) => Err(MkrootError::from(format!(
-			"Error running ldd ({}): {}",
-			&config.ldd.display(),
-			e
-		))),
+		Err(e) => serr!(
+			"Error running ldd (",
+			&config.ldd.display().to_string(),
+			"): ",
+			&e.to_string()
+		),
 	}
 }
 

src/files/mod.rs

@@ -1,3 +0,0 @@
-mod mkroot_files;
-
-pub use mkroot_files::*;

src/macros.rs

@@ -0,0 +1,6 @@
+#[macro_export]
+macro_rules! serr {
+	($($arg:tt)*) => {
+		Err(Box::from([$($arg)*].concat()))
+	};
+}

src/main.rs

@@ -3,9 +3,11 @@ extern crate structopt;
 
 mod config;
 mod dirs;
-mod error;
 mod files;
+#[macro_use]
+mod macros;
 mod os_release;
+mod result;
 mod skel;
 mod util;
 
@@ -14,8 +16,9 @@ use std::path::PathBuf;
 use structopt::StructOpt;
 
 use config::Config;
+use result::Result;
 
-fn main() -> error::MkrootResult<()> {
+fn main() -> Result<()> {
 	let config: Config = StructOpt::from_args();
 
 	if config.verbose {
@@ -40,10 +43,7 @@ fn main() -> error::MkrootResult<()> {
 	files::set_linker_permissions(&mkrootfiles.lib64s, &d, config.verbose)?;
 
 	if let Err(e) = os_release::os_release(&config) {
-		return Err(error::MkrootError::from(format!(
-			"Error creating etc/os-release: {}",
-			e
-		)));
+		return serr!("Error creating etc/os-release: ", &e.to_string());
 	}
 
 	if config.skel != PathBuf::new() {

src/os_release.rs

@@ -4,9 +4,10 @@ use std::os::unix::fs::PermissionsExt;
 use std::path::PathBuf;
 
 use crate::config::Config;
-use crate::error::{MkrootError, MkrootResult};
+use crate::result::Result;
+use crate::serr;
 
-pub fn os_release(config: &Config) -> MkrootResult<()> {
+pub fn os_release(config: &Config) -> Result<()> {
 	let mut path = PathBuf::from(&config.root_dir);
 	path.push("etc/os-release");
 
@@ -28,19 +29,21 @@ pub fn os_release(config: &Config) -> MkrootResult<()> {
 			let mut perms = meta.permissions();
 			perms.set_mode(0o644);
 			if let Err(e) = set_permissions(&path, perms) {
-				return Err(MkrootError::from(format!(
-					"Error setting permissions {}: {}",
-					&path.display(),
-					e
-				)));
+				return serr!(
+					"Error setting permissions ",
+					&path.display().to_string(),
+					": ",
+					&e.to_string()
+				);
 			}
 		}
 		Err(e) => {
-			return Err(MkrootError::from(format!(
-				"Error reading metadata {}: {}",
-				&path.display(),
-				e
-			)))
+			return serr!(
+				"Error reading metadata ",
+				&path.display().to_string(),
+				": ",
+				&e.to_string()
+			);
 		}
 	}
 

src/result.rs

@@ -0,0 +1 @@
+pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;

src/skel.rs

@@ -3,10 +3,10 @@ use std::os::unix::fs::PermissionsExt;
 use std::path::PathBuf;
 
 use crate::config::Config;
-use crate::error::*;
+use crate::result::Result;
 use crate::util::{copy_file, get_perms, mkdir, set_perms};
 
-pub fn copy(config: &Config) -> MkrootResult<()> {
+pub fn copy(config: &Config) -> Result<()> {
 	if config.verbose {
 		println!(
 			"Copying skel {} to {}",
@@ -18,7 +18,7 @@ pub fn copy(config: &Config) -> MkrootResult<()> {
 	copy_dir(&config.skel, &config.root_dir, config.verbose)
 }
 
-fn copy_dir(src: &PathBuf, dst: &PathBuf, verbose: bool) -> MkrootResult<()> {
+fn copy_dir(src: &PathBuf, dst: &PathBuf, verbose: bool) -> Result<()> {
 	match read_dir(&src) {
 		Ok(src_dir) => {
 			for entry in src_dir {
@@ -45,11 +45,13 @@ fn copy_dir(src: &PathBuf, dst: &PathBuf, verbose: bool) -> MkrootResult<()> {
 								}
 								mkdir(&new_dst)?;
 							} else if !new_dst.is_dir() {
-								return Err(MkrootError::from(format!(
-									"Error: skel {} is a directory but target {} isn't",
-									&entry_path.display(),
-									&new_dst.display()
-								)));
+								return serr!(
+									"Error: skel ",
+									&entry_path.display().to_string(),
+									" is a directory but target ",
+									&new_dst.display().to_string(),
+									" isn't"
+								);
 							}
 
 							let entry_perms = get_perms(&entry_path)?;
@@ -71,21 +73,23 @@ fn copy_dir(src: &PathBuf, dst: &PathBuf, verbose: bool) -> MkrootResult<()> {
 						}
 					}
 					Err(e) => {
-						return Err(MkrootError::from(format!(
-							"Error getting directory entry in {}: {}",
-							&src.display(),
-							e
-						)))
+						return serr!(
+							"Error getting directory entry in ",
+							&src.display().to_string(),
+							": ",
+							&e.to_string()
+						);
 					}
 				}
 			}
 		}
 		Err(e) => {
-			return Err(MkrootError::from(format!(
-				"Error opening directory {}: {}",
-				&src.display(),
-				e
-			)))
+			return serr!(
+				"Error opening directory ",
+				&src.display().to_string(),
+				": ",
+				&e.to_string()
+			);
 		}
 	};
 

src/util.rs

@@ -0,0 +1,58 @@
+use std::fs::{copy, create_dir, metadata, set_permissions, Permissions};
+use std::path::PathBuf;
+
+use crate::result::Result;
+use crate::serr;
+
+pub fn get_perms(path: &PathBuf) -> Result<Permissions> {
+	match metadata(path) {
+		Ok(meta) => Ok(meta.permissions()),
+		Err(e) => serr!(
+			"Error retrieving metadata ",
+			&path.display().to_string(),
+			": ",
+			&e.to_string()
+		),
+	}
+}
+
+pub fn set_perms(path: &PathBuf, perms: Permissions) -> Result<()> {
+	if let Err(e) = set_permissions(path, perms) {
+		return serr!(
+			"Error setting permissions ",
+			&path.display().to_string(),
+			": ",
+			&e.to_string(),
+		);
+	}
+
+	Ok(())
+}
+
+pub fn mkdir(dir: &PathBuf) -> Result<()> {
+	if let Err(e) = create_dir(&dir) {
+		return serr!(
+			"Error creating directory ",
+			&dir.display().to_string(),
+			": ",
+			&e.to_string()
+		);
+	}
+
+	Ok(())
+}
+
+pub fn copy_file(src: &PathBuf, dst: &PathBuf) -> Result<()> {
+	if let Err(e) = copy(&src, &dst) {
+		return serr!(
+			"Error copying file from ",
+			&src.display().to_string(),
+			" to ",
+			&dst.display().to_string(),
+			": ",
+			&e.to_string()
+		);
+	}
+
+	Ok(())
+}

src/util/copy_file.rs

@@ -1,17 +0,0 @@
-use std::fs::copy;
-use std::path::PathBuf;
-
-use crate::error::*;
-
-pub fn copy_file(src: &PathBuf, dst: &PathBuf) -> MkrootResult<()> {
-	if let Err(e) = copy(&src, &dst) {
-		return Err(MkrootError::from(format!(
-			"Error copying file from {} to {}: {}",
-			&src.display(),
-			&dst.display(),
-			e
-		)));
-	}
-
-	Ok(())
-}

src/util/mkdir.rs

@@ -1,16 +0,0 @@
-use std::fs::create_dir;
-use std::path::PathBuf;
-
-use crate::error::*;
-
-pub fn mkdir(dir: &PathBuf) -> MkrootResult<()> {
-	if let Err(e) = create_dir(&dir) {
-		return Err(MkrootError::from(format!(
-			"Error creating directory {}: {}",
-			&dir.display(),
-			e
-		)));
-	}
-
-	Ok(())
-}

src/util/mod.rs

@@ -1,7 +0,0 @@
-mod copy_file;
-mod mkdir;
-mod perms;
-
-pub use crate::util::copy_file::copy_file;
-pub use crate::util::mkdir::mkdir;
-pub use crate::util::perms::*;

src/util/perms.rs

@@ -1,27 +0,0 @@
-use std::fs::{metadata, set_permissions, Permissions};
-use std::path::PathBuf;
-
-use crate::error::*;
-
-pub fn get_perms(path: &PathBuf) -> MkrootResult<Permissions> {
-	match metadata(path) {
-		Ok(meta) => Ok(meta.permissions()),
-		Err(e) => Err(MkrootError::from(format!(
-			"Error retrieving metadata {}: {}",
-			path.display(),
-			e
-		))),
-	}
-}
-
-pub fn set_perms(path: &PathBuf, perms: Permissions) -> MkrootResult<()> {
-	if let Err(e) = set_permissions(path, perms) {
-		return Err(MkrootError::from(format!(
-			"Error setting permissions {}: {}",
-			path.display(),
-			e
-		)));
-	}
-
-	Ok(())
-}